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Lapping/Seating Piston Rings

To: fot@autox.team.net
Subject: Lapping/Seating Piston Rings
From: Rikrock@aol.com
Date: Tue, 2 Apr 2002 23:07:48 EST
Amici,

What follows is a message  Kas posted to the list a while back.

Rich Rock
Pottstown,PA


> From: kaskas@earthlink.net 
> 
> 
> Because of a bunch of inquiries on the lapping business, this is what I 
> did.
> 
> After assembly of the rings to the pistons and the honing of the sleeves:
> 
> I used a mixture of BonAmi and 30 weight oil just gritty, not a paste. I'd
> coat the assembled rings with this mixture, insert into the sleeve and give
> it ten strokes , remove from the sleeve and dip into a deep pan of gas (or
> thinner) and carefully turn the rings on the pistons to remove the brunt of
> the compound, then go to 3 more seperate pans of clean lacquer thinner then
> finally a bucket with hot soap suds. Blow dry and quickly spray the 
> assembly
> with WD-40. All the while being very carful not to "spring" the rings in 
> any
> way and of course you do not remove the rings. Remember to number the
> sleeves so they match the ring and piston sets. Clean the sleeves in much
> the same manner. This saved a lot of run-in time on the dyno and gave by
> far the best performance.
> 
> ----- Original Message -----
> From: "Jack W. Drews" <vinttr4@geneseo.net>
> To: "R. Kastner" <kaskas@earthlink.net>
> Sent: Wednesday, June 20, 2001 12:41 PM
> Subject: Re: Total Seal rings
> 
> 
> > "R. Kastner" wrote:
> >
> > > In the end to make the most power I found it best to
> > > lap the rings into the bores of the sleeves on the bench then fit to 
> the
> > > block.
> >
> > --What a very neat idea. I'm going to try it on the next rebuild. What 
> did
> you
> > use as a lapping compound? Valve grinding compound?
> >
> > uncle jack and New Blue

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